> ## Documentation Index
> Fetch the complete documentation index at: https://e-gurl.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# DNS Leak Test

> Test specific websites for DNS leaks by comparing results across multiple trusted resolvers

# DNS Leak Test

Check if your system DNS is leaking or returning manipulated results by comparing against trusted public resolvers.

## How It Works

The DNS leak test queries a domain through your **system DNS** and four **trusted resolvers** (Cloudflare, Google, Quad9, OpenDNS), then compares the results:

1. **System DNS** - Resolves the domain using your configured DNS
2. **Trusted Resolvers** - Resolves via Cloudflare (1.1.1.1), Google (8.8.8.8), Quad9 (9.9.9.9), and OpenDNS (208.67.222.222)
3. **Comparison** - If your system DNS returns IPs not seen from any trusted resolver, a leak is detected

## Interactive Mode

From the main menu, select option **\[11] DNS Leak Test**:

```
【 DNS LEAK TEST 】

Enter domain to test (e.g., google.com): twitter.com

═══════════════════════════════════════════════════════════════
                    DNS LEAK TEST RESULTS
═══════════════════════════════════════════════════════════════

  Domain:  twitter.com

  ── System DNS ──
    IPs:     10.10.34.35
    Latency: 5ms

  ── Trusted Resolvers ──
    Cloudflare   (1.1.1.1):        104.244.42.65  [42ms]
    Google       (8.8.8.8):        104.244.42.65  [38ms]
    Quad9        (9.9.9.9):        104.244.42.65  [45ms]
    OpenDNS      (208.67.222.222): 104.244.42.65  [50ms]

  🔴 LEAK DETECTED
     DNS leak detected! System returned IPs not seen from any trusted resolver...
```

## CLI Usage

```bash theme={null}
# Test a specific domain
dns-mns leak-test google.com

# JSON output for scripting
dns-mns leak-test twitter.com --json
```

## Understanding Results

| Result               | Meaning                                                                                    |
| -------------------- | ------------------------------------------------------------------------------------------ |
| ✅ **No Leak**        | System DNS returns the same IPs as trusted resolvers                                       |
| 🔴 **Leak Detected** | System DNS returns different IPs — possible DNS poisoning, hijacking, or transparent proxy |

<Warning>
  A leak detection means your system DNS is returning different results than
  trusted resolvers. This commonly happens in Iran where ISPs perform DNS
  manipulation. Consider using encrypted DNS (options \[7], \[8], or \[10]) to
  protect your queries.
</Warning>